Apparently, Walz honeymooned in China and traveled there numerous times over 10 years. Perhaps he did hear about a ritual? https://x.com/Bogey182299079/status/1822098663998390410

I'm actually wondering now if there might be more to it than a rumor: "In modern times, the idea of ingesting semen can hardly be discussed outside of a sexual context. However, in ancient cultures, semen was often associated with one’s life force, spiritual essence, or masculinity. We aim to provide an overview of several contexts in which semen ingestion was purportedly utilized as more than a simple sexual act." https://www.auajournals.org/doi/10.1097/JU.0000000000000850.018